Question

1. Cnpocmumu bupaz 1) sin² a+ cos²a - 2​

Answer 1

Ответ:

Вираз sin²(a) + cos²(a) є однією з основних тригонометричних тотожностей. Він завжди дорівнює 1.

Таким чином:

sin²(a) + cos²(a) = 1

Якщо у вас є вираз sin²(a) + cos²(a) - 2, то:

1 - 2 = -1

Отже, sin²(a) + cos²(a) - 2 = -1.

Объяснение:

Answer 2

It appears that you have an expression involving trigonometric functions and a numerical value "1." Let me help you simplify it:

The expression you provided is: sin²(a) + cos²(a) - 2

Now, let's simplify this expression using a well-known trigonometric identity:

sin²(a) + cos²(a) = 1

This is an identity called the Pythagorean identity, and it holds true for all values of "a." So, substituting this identity into the expression:

1 - 2

Now, subtract 2 from 1:

1 - 2 = -1

So, the simplified expression is -1.